Railway draft-rigging.



J. E'. OGONNOR.' RAILWAY DRAFT RIGGING. APPLIOATION FILED D110. 9, 1911.

Patented June 17, 1913.

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RAILWAY DRAFT RIGGING. APPLIUATION FILED DB0. s, 1911 gpfg'a Patented June 17, 1913.

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J.. F. OGONNQR. RAILWAY DRAFT RIGGING.

APPLICATION FILED DEO'. 9,-1911.

Patented June 17;.1913.

3 SHEETS-SHEET 3.

INVENTOR mmk- WITNESSES Q.

` cart, sfrarrg HUN F. OCONNOR. OF CHICAGO, ILLINOIS. ASSIGNOR IO WILLIAM H. MINE, OF

CHICAGO, ILLINOIS.

RAILWAY DRAFT-RIGGING.

Ai ,essere Specification of Letters Patent.

Patented June 17,191 3.

Application filed December 9. 1911. Serial NoA 664,755.

.of illinoishave intf'ented a certain new and useful improvement in Railway Draft-Rig- Qing. of which the following 1s a full, clear,

concise, and exact description, reference be ing had to the accompanying drawings. forniing. a part of this specification.

My invention relates to improvements in rail-way draft rigging.

In the practical operation of railroadsit is desirable in coupling cars, and in starting and stopping trains of cars, and accelerating and retarding train movement that the cars be capable through their tractive connection with the locomotive of receiving each in succession, and in graduating degrees in cach. the impetus of the locomotive both in pulling and butting action. In the draft rigging employed it is therefore desirable that the ratio of increase in resistance to eon'ipression he low on the initial movement. and for a determined distance, the ratio of increase for the remainder of the movement being preferably very high.

One of the objects of my invention is to :provide a draft rigglng whlch will praetically accomplish this result.

Another object is to provide a friction draft rigging of strong,v simple, eiiicient and durable construction, and in which the friction shell and spring cage ma)y be in one piece. and arranged for the easy assembling, removing and changing of contained parts.

To practicall;7 accomplish these objects l combine with the draw har, followers, stops, springs and friction devices, (the latter comprising a longitudinally movable friction shell. friction blopks withinthe shell, and a wedge or spreader block and anti-friction rollers interposed between the wedge and friction blocks), a two faced spring seat and supplennntal compression resisting devices, preferably a supplemental spring, interposed between the friction lblocks and the main springs by means of the said spring seat so that for a determined distance the movement of the friction blocks is resisted by the preliminary or supplemental spring only.

ln the accompanying drawings forming a part of this specification Figure 1 is an ele vation partly in central vertical longitudinal section ol. ay friction spring draft rigging embodying in v intention. Fig. 2 is a plan View partljtv in horizontal section. Fig. 3 a horizontal section showing the position of the parts within the friction shell and spring cage on prelinlinarv butiing movement with the supplemental spring compressed without any1 movement of the two faced spring seat. Fig. 4 is a horizontal section showing the position of parts in full buff. Fig. 5 is a cross section upon -line 5, of Fig. 1. Fig. G is a cross section on line 6, 6 of Fig. 1. Fig. 7 is a perspective view of the integral frict'ionshell and spring cage. Fig. 8 is a perspective view of one of the friction blocks or shoes. Fig. 9 is a perspective view of the double faced spring seat. wedge or spreader block. i

In the drawings 11 are the draft sills or members of the car frame to which the draft rigging is applied. 12 the end sill, 13 the carry iron, 14 the butfer block, 15 the draw bar, 16 the draft yoke, 17 the carrier plate, 18 rear stop members secured to the draft members or sills, prefeably by the rivets 19, and having rear stop shoulders 20, 21 front stop members having front stop shoulders 22 and limiting stop shoulders 251 and 24, 25 is the front follower. The rear follower 26, which abuts against the stop shoulders 201of the rear stop members 18, is preferablv made integral with the shell 27. The shell 27 consists of a spring cage 2S and a friction cylinderI 20, preferably integral therewith. The twin spring cage 28 is preferablv of a` general rectangular shape, and provided with sockets or seats 3() to receive the preferably side by side arranged spring cushioning members or main springs 31, 31,

each of which preferably incloses a smallerspring 32. 32 nested within it. The spring cage 28 is provided with longitudinal slots or openings 33 in its upright faces 34, which fit bet-Ween the center sills 11. the upright faces of the spring cage serving as guides in its reciprocating movements. The openings 33 permit the insertion into the spring rage therethrough of the main springs 31, 31 and 32. 32. The upper and lower horizontal faces 35 of the spring cage tit and engage the inner faces of the draft yoke 16, the lower. member of which ldraft yoke rests leo is cylindrical in form or circular in cross upon the carrier plate 17, and thus sup orts the en tire cushioning mechanism o the draft rlgging. The spring cage is provided in preferable construction with upper and 'lower longitudinal ribs 36.

The friction cylinder or friction shell 29 section, and is preferably provided wit-h external annular ribs 37 to give it further strength. It has a longitudinally extending annular friction face 3S, which is in sliding friction'al contact with the exterior friction face 39 .of the segmental friction shoes 40,

lwhich .are preferably three in number.

p againstthe front follower 25. The wedge is-.preferably of pyramidal form and with arrangemen-ig.-` is also -providedwith shoulders 47 for enthreewedge faces, one for each of the friction shoes, .and each inclined face of the.

wedge hasV a shulder v46 to-retain ,the antifrictlon roller 43 in itsproper transverse Each of the" friction shoes gagement with the endsoftheftantiffricticn roller-43 to keep. the roller impljace'length- 4 'wisefl Thfese friction cushioning members are ywithin the friction shell 29, which is preferably integral with the sprin'g cage 28, forming the shell 27. p v

The forward corners 48 of the spring cage serve as st op shoulders for engagement with the! rear limiting stop shoulder l24 of the front stop member 21 to limit the forward movement of ,the shell under pulling strains, and to distribute the shock to the draft sills at different' points of their length. The forward ends of the main springs'3l, 31 and 32, 32 engage the 'rear facev 49 of the double faced spring' seat 50. The forward face of the spring seat 50 is provided with a collar 51 within which the rear end of the supplemental spring 52 is seated. The forward end of said spring is seated against the annularlv' arranged segmental frictionY shoes 40, and preferably against their rear end i f faces 53.

The numeral 54 designates shoulders upon the segmental friction shoes. In preferable construction I employ one supplemental spring, seated as hereinbefore described.

The double faced springseat 50 is also provided with a central bearing or hub portion 55. The wedge 45. is provided with a perforation 56, the doublefaced spring seat with the perforation 57,*and the. rear end of the spring cage with the perforation 58 for the insertion of the connecting rod 59 therethrough. The connecting rod is vfurnished at its forward end with the head 60,

which ts in longitudinally sliding engagement within the recess 61A in the wedge 45. At its rear end the connecting rod 59 is threaded to receive the nut 62. The thimble 63 incloses a portion of the connecting rod 59, the forward end 64 of said thimble exA tending intothe rear end o-f the opening in the wedge, and its rear end 65 is seated against the hub 55 of the double faced spring seat 50.

In normal position of the parts of the draft rigging, as illustrated in Fig. 2 of the drawings, the forward edge 66 of the collar 51 of the double facedl spring seat is sepavratedby a predetermined space from the rear ends 53 of the friction shoes 40. In assembling the gear the main springs 31, 31 and 32, 32 are given an initial loading, preferablyv greater than the compressed capacity of the preliminary spring 52, and are held in this position by the connect-ing rod 59 and the sleeve or thimble63. On movement of the dra-w har the supplementalcompressic-n resisting device or spring 52 compresses within the collar 51 of the double faced spring seat, and then the rear end of the friction shoes engage the forward faces 66 Vof `the said collar. v- Thereupon the twin springs come into action. The supplemental compression resisting device also serves to 'ta-ke up the wear, if any there be, between the friction shoes and the friction shell.

I claimv 1 1. Ina friction draft rigging the combination with a draw bar, draft yoke, sto-p members, and a longitudinally movable shell, of friction members within the shell, a supplemental spring engaging lthe friction members, main springsA and a spring seat connecting them with the supplemental spring, the movement of the draw bar being cushioned firs-t. bythe supplemental spring` in connection with t-he friction members, and

secondly by the main springs in connection wit-h the friction members.

2. In a friction draft rigging the combina- 'tion with avdraw bar, draft yoke, stop members and a shell, of friction shoes and wedge within the shell, aA spring seat engaging` therewith, a supplemental spring device cont-actingivithl the-friction shoes, main springs-j and a double faced springN seat between theV same and-the'supplemental spring device,

kthe said spring seat being provided with means contacting with the friction vshoes upon the compression ofthe supplemental spring device.

In a friction draft rigging the combination with va draw bar, draft yoke, stop mernbers and a shell, of frictionshoes within the shell, 'a supplemental spring in contact with the friction shoes, main springs, and a double faced spring seat between the same and the supplemental springfthe said spring sea-t being provided with a collar within whichlthe supplemental spring compresses, and which contacts with the friction shoes upon such compression.

4. yTn a friction draft rigging the combination with a draw bar, draft yoke and stop members, of a longitudinally movable friction shell, friction shoes and'spreading device Within said friction shell, a spring =cage connected with said-friction shell, springs within said spring cage, a double faced spring seat and supplemental spring, the said double faced spring seat being provided with a forwardly extending collar, the said spring devices re-acting at one end against the springr cage, and at the other end against the double faced spring seat, the said supplemental spring being interposed between the double faced spring seat and the ends of the friction shoes, and the collar of the spring seat engaging theends cf the friction shoes upon full compression of the Vsupplemental spring.

5. In a friction draft rigging, a compression resisting device comprising a friction cylinder, a spring cage connected thereto, friction-members Within the friction cylinder, main springs within the spring cage, a supplemental spring contacting with the friction members, and a movable spring seat interposed between lthe mainsprings and the supplemental. spring.

JOHN F'. OCONNOR.

Witnesses:

p ELEANOR L. NASH,.- JOHN A. MAR'riNKUs.

Copies of` this patent may be obtained for ve cents each, by addressing Athe Commissioner 'of 'Patents Washington, ID. CJ 

